Abstract

In this project, the sound field behavior in a 1:5 scale reverberation chamber has been measured and analyzed. Both hanging diffusers and boundary diffusers have been applied in an effort to increase the chamber's sound field diffusivity, which has been characterized based on the guidelines set forth in several American and international standards, including ASTM C423, ASTM E90, and ISO 354. Objective data from measured impulse responses for several configurations of the diffusers will be presented. These data will be compared to those from the empty chamber and to the criteria from the standards. The relative effectiveness of hanging diffusers vs. boundary diffusers will be discussed.